Preparation method of flame-proof sea silk new material

Abstract

This invention disclosed a method of produce new material of flame retardant alginate fiber: make sure the proportion of G chain segment and M chain segment which in the molecular structure is 1:1 - 1:3, the potassium alginate's weight percent of solute is 4-7% or the mixture of potassium alginate and sodium alginate be fully predissolved and dissolved and after adjustment viscosity, filter and defoamed by sodium hypochlorite or hydrogen peroxide, produce alginate fiber material by solution spinning at room temperature, the draft proportion of fiber is 120-300%. The limited oxygen index of the fiber reaches to 34, the fiber's tensile strength is more than 3.5cN / tex, the linear density is 2.2-3.5 dtex. The fiber produced by this method is flame retardant, high strength of fracture and bio-degradable, and so on, so which can be used to produce flame retardant textiles by pure spinning or blended. This invention disclosed a method of produce a new material of flame retardant alginate fiber: make sure the proportion of G chain segment and M chain segment which in the molecular structure is 1:1 - 1:3, the potassium alginate's weight percent of solute is 4-7% or the mixture of potassium alginate and sodium alginate be fully predissolved and dissolved and after adjustment viscosity, filter and defoamed by sodium hypochlorite or hydrogen peroxide, produce alginate fiber material by solution spinning at room temperature, the draft proportion of fiber is 120-300%. The limited oxygen index of the fiber reached to 34, the fiber's tensile strength is more than 3.5cN / tex, the linear density is 2.2-3.5 dtex. The fiber produced by this method is flame retardant, high strength of fracture and bio-degradable, and so on, so which can be used to produce flame retardant textiles by pure spinning or blending.

Description

technical field

[0001] The present invention relates to a method for preparing a flame-retardant seaweed fiber new material, more particularly to a new seaweed fiber material prepared by wet spinning and stretching heat setting using potassium alginate and sodium alginate as spinning raw materials. It belongs to the field of polymer materials. Background technique

[0002] In recent years, new fibers have emerged one after another, and the continuous innovation of regenerated cellulose fibers is one of the highlights, which provides new development opportunities for the world's textile and clothing industries. Cellulose fiber is favored by people because of its excellent wearability, but the cultivation of cotton occupies a large amount of farmland, and cotton fiber is flammable, so it must be modified by flame retardant to meet the needs of some protective clothing. Viscose fiber is also a flammable fiber, and a large amount of three wastes are produced in the production p...

Examples

Embodiment 1

[0014] Add 10 kg of 200-mesh high-viscosity potassium alginate into a dissolving kettle filled with 190 liters of deionized water, stir and dissolve at a high speed at 70°C, wherein the ratio of the G segment to the M segment of the raw material potassium alginate is 1:1 , and use hydrogen peroxide to adjust the viscosity of the solution to 12000mPa·S, and make spinning solution after filtration and vacuum defoaming.

[0015] Utilize a spinneret with 4000 holes of 0.075 microns to carry out wet spinning, the spinning speed is 30 m / min, the temperature of the spinning solution is 55 °C, the coagulation bath is 3% calcium chloride aqueous solution, and the coagulation bath temperature is 40 °C . After passing through the coagulation bath, the primary seaweed fibers are drawn, heat-set and oiled after passing through the pre-heating bath and the drawing bath, wherein the temperatures of the pre-heating bath, the drawing bath and the drawing-setting temperature are 60°C, 100°C, an...

Embodiment 2

[0017] Add 8 kg of 200-mesh high-viscosity potassium alginate and 2 kg of 200-mesh sodium alginate into a dissolving kettle filled with 190 liters of deionized water, stir and dissolve at a high speed at 65°C, wherein the raw material potassium alginate G segment and M The ratio of chain segments is 3:1, and the viscosity of the solution is adjusted to 10000mPa·S by using sodium hypochlorite, and the spinning solution is made after filtration and vacuum defoaming.

[0018] Utilize the spinneret of 4000 holes 0.075 micron to carry out wet spinning, the spinning speed is 30 m / min, the temperature of the spinning solution is 55°C, the coagulation bath is 3.5% calcium chloride aqueous solution, and the coagulation bath temperature is 40°C . After passing through the coagulation bath, the primary seaweed fibers are drawn, heat-set and oiled after passing through the pre-heating bath and the drawing bath, wherein the temperatures of the pre-heating bath, the drawing bath and the dra...

Embodiment 3

[0020] Add 10 kg of 200-mesh high-viscosity potassium alginate into a dissolving kettle filled with 190 liters of deionized water, stir and dissolve at a high speed at 70°C, wherein the ratio of the G segment to the M segment of the raw material potassium alginate is 2:1 , and use hydrogen peroxide to adjust the viscosity of the solution to 5000mPa·S, and make spinning solution after filtration and vacuum defoaming.

[0021] Utilize a spinneret with 4000 holes of 0.060 microns to carry out wet spinning, the spinning speed is 30 m / min, the temperature of the spinning solution is 55°C, the coagulation bath is 3% calcium chloride aqueous solution, and the coagulation bath temperature is 40°C . After passing through the coagulation bath, the primary seaweed fiber is subjected to drawing heat setting and oiling treatment after the preheating bath and drawing bath, wherein the temperatures of the preheating bath, drawing bath and drawing setting temperature are 70°C, 100°C, and 130°...

technical field

[0001] The present invention relates to a method for preparing a flame-retardant seaweed fiber new material, more particularly to a new seaweed fiber material prepared by wet spinning and stretching heat setting using potassium alginate and sodium alginate as spinning raw materials. It belongs to the field of polymer materials. Background technique

[0002] In recent years, new fibers have emerged one after another, and the continuous innovation of regenerated cellulose fibers is one of the highlights, which provides new development opportunities for the world's textile and clothing industries. Cellulose fiber is favored by people because of its excellent wearability, but the cultivation of cotton occupies a large amount of farmland, and cotton fiber is flammable, so it must be modified by flame retardant to meet the needs of some protective clothing. Viscose fiber is also a flammable fiber, and a large amount of three wastes are produced in the production p...

Examples

Embodiment 1

[0014] Add 10 kg of 200-mesh high-viscosity potassium alginate into a dissolving kettle filled with 190 liters of deionized water, stir and dissolve at a high speed at 70°C, wherein the ratio of the G segment to the M segment of the raw material potassium alginate is 1:1 , and use hydrogen peroxide to adjust the viscosity of the solution to 12000mPa·S, and make spinning solution after filtration and vacuum defoaming.

[0015] Utilize a spinneret with 4000 holes of 0.075 microns to carry out wet spinning, the spinning speed is 30 m / min, the temperature of the spinning solution is 55 °C, the coagulation bath is 3% calcium chloride aqueous solution, and the coagulation bath temperature is 40 °C . After passing through the coagulation bath, the primary seaweed fibers are drawn, heat-set and oiled after passing through the pre-heating bath and the drawing bath, wherein the temperatures of the pre-heating bath, the drawing bath and the drawing-setting temperature are 60°C, 100°C, an...

Embodiment 2

[0017] Add 8 kg of 200-mesh high-viscosity potassium alginate and 2 kg of 200-mesh sodium alginate into a dissolving kettle filled with 190 liters of deionized water, stir and dissolve at a high speed at 65°C, wherein the raw material potassium alginate G segment and M The ratio of chain segments is 3:1, and the viscosity of the solution is adjusted to 10000mPa·S by using sodium hypochlorite, and the spinning solution is made after filtration and vacuum defoaming.

[0018] Utilize the spinneret of 4000 holes 0.075 micron to carry out wet spinning, the spinning speed is 30 m / min, the temperature of the spinning solution is 55°C, the coagulation bath is 3.5% calcium chloride aqueous solution, and the coagulation bath temperature is 40°C . After passing through the coagulation bath, the primary seaweed fibers are drawn, heat-set and oiled after passing through the pre-heating bath and the drawing bath, wherein the temperatures of the pre-heating bath, the drawing bath and the dra...

Embodiment 3

[0020] Add 10 kg of 200-mesh high-viscosity potassium alginate into a dissolving kettle filled with 190 liters of deionized water, stir and dissolve at a high speed at 70°C, wherein the ratio of the G segment to the M segment of the raw material potassium alginate is 2:1 , and use hydrogen peroxide to adjust the viscosity of the solution to 5000mPa·S, and make spinning solution after filtration and vacuum defoaming.

[0021] Utilize a spinneret with 4000 holes of 0.060 microns to carry out wet spinning, the spinning speed is 30 m / min, the temperature of the spinning solution is 55°C, the coagulation bath is 3% calcium chloride aqueous solution, and the coagulation bath temperature is 40°C . After passing through the coagulation bath, the primary seaweed fiber is subjected to drawing heat setting and oiling treatment after the preheating bath and drawing bath, wherein the temperatures of the preheating bath, drawing bath and drawing setting temperature are 70°C, 100°C, and 130°...

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